问题

With the development of modern society, E-mail as well as telephones an important part in daily communication

A:have played
B:is playing
C:are playing
D:played

正确答案是：

同类题型

is very difficult for them babies .

I like to sit __________ the bus.

23．Mike is handsome, kind and full of energy____, I can’t speak too highly of him

He emailed his son again，________to get in touch with him.[ ]

Millie can’t ride a bike, so she goes to school by bike.